Underwater digital camera

Abstract

An underwater digital camera includes an image capturing unit, an underwater conditions sensing unit, a memory, and a processor. The image capturing unit is used for capturing images. The underwater condition sensing unit is used for sensing underwater conditions. The processor is used for writing the underwater conditions into the memory together with an image currently captured by image capturing unit while underwater.

1 . An underwater digital camera comprising:
 an image capturing unit for capturing an image;   an underwater conditions sensing unit for sensing underwater conditions;   a memory; and   a processor for writing the underwater conditions into the memory together with an image currently captured by the image capturing unit while underwater.   
   
   
       2 . The underwater digital camera as claimed in  claim 1 , wherein the underwater digital camera further comprises warning output means capable of outputting warning signal to a diver using the underwater digital camera when instructed by the processor; and wherein the processor is capable of judging whether the diver is in danger according to the underwater conditions. 
   
   
       3 . The underwater digital camera as claimed in  claim 2 , wherein the underwater conditions sensing unit comprises a timing circuit capable of clocking a dive time, a temperature sensor capable of detecting a water temperature, and a pressure sensor capable of detecting a water pressure. 
   
   
       4 . The underwater digital camera as claimed in  claim 3 , wherein a warning signal is generated when at least one of following conditions is satisfied: the dive time longer than a preset dive time; the water pressure bigger than a preset water pressure; the water temperature lower than a preset water temperature. 
   
   
       5 . The underwater digital camera as claimed in  claim 2 , wherein the warning output means is one selected from the group consisting of a flash lamp of the digital camera, a sound generating device and a monitor. 
   
   
       6 . The underwater digital camera as claimed in  claim 5 , wherein the flash lamp is able to automatically flash when the diver being in danger judged by the processor. 
   
   
       7 . A method for capturing a image captured by an underwater digital camera, comprising:
 capturing an image;   obtaining current underwater conditions; and   storing the image together with the underwater conditions.   
   
   
       8 . The method as claimed in  claim 7 , wherein the underwater conditions comprise dive time, water pressure, and water temperature. 
   
   
       9 . A warning method of an underwater digital camera, comprising:
 presetting a set of warning underwater conditions;   sensing underwater conditions;   judging whether a diver currently using the underwater digital camera is in danger by comparing the sensed underwater conditions and the warning underwater conditions; and   outputting a warning signal if the diver is judged to be in danger.   
   
   
       10 . The method as claimed in  claim 9 , wherein the set of warning underwater conditions comprise a preset dive time, a preset water pressure, and a preset water temperature, and the underwater conditions comprises dive time, water pressure, and water temperature. 
   
   
       11 . The method as claimed in  claim 10 , wherein a warning signal is generated when at least one condition of following conditions is satisfied: the dive time longer than the preset dive time; the water pressure bigger than the preset water pressure; the water temperature lower than the preset water temperature.